12 Questions
What are the major features of Angular?
Declarative templates, dependency injection, end to end tooling
Describe Angular's application structure.
An application in Angular is a tree of individual components.
What is the purpose of directives in Angular?
Directives add behavior to an existing DOM element or an existing component instance.
Where can you define an Angular component's template?
You can define the template inline using the template property or in a separate HTML file linked in the component metadata using the templateUrl property.
What is the purpose of modules in Angular?
Modules are logical boundaries in your application, dividing it into separate modules to separate functionality.
What are the five important options of the NgModule decorator?
These options include declarations, imports, exports, providers, and bootstrap.
What is the purpose of ngOnInit in Angular?
ngOnInit is a life cycle hook called by Angular to indicate that Angular is done creating the component. It is used for initialization and declaration.
Explain the role of the Constructor method in Angular classes.
The Constructor is a default method of the class that is executed when the class is instantiated. It ensures proper initialization of fields in the class and its subclasses.
What is Two-way binding in Angular and how does it work?
Two-way data binding allows data flow both ways. For example, [(ngModel)] in Angular synchronizes the data between the DOM and the component.
Why is it recommended to avoid performing actual 'work' in the constructor of an Angular class?
The constructor should only be used to initialize class members, not to perform actual 'work'. Actual 'work' should be done in methods like ngOnInit.
What is the purpose of services in Angular applications?
Services in Angular provide common functionality to various modules, allowing for better separation of concerns and modularity.
Explain the role of ElementInjector hierarchies in Angular.
Angular creates ElementInjector hierarchies implicitly for each DOM element. These injectors are created to provide dependencies for the elements.
Explore the major features of Angular, the TypeScript-based open-source front-end platform. Learn about declarative templates, dependency injection, and end-to-end tooling that ease application development. Discover the major differences of Angular in a tabular format.
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